New constraints on Lorentz invariance violation from the neutron electric dipole moment
نویسندگان
چکیده
منابع مشابه
Neutron electric dipole moment on the lattice
We carry out a feasibility study toward a lattice QCD calculation of the neutron electric dipole moment (NEDM) in the presence of the θ term using two different approaches. In the first method, we calculate the CP-odd electromagnetic form factor F3, which becomes the NEDM in the zero momentum transfer limit. At the first order in θ , we derive a formula connecting the lattice three-point functi...
متن کاملNeutron Electric Dipole Moment from Lattice QCD
Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan Riken BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973, USA Center for Computational Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan Department of Physics, Nagoya University, Nagoya 464-8602, Japan Department of Physics, Hiroshima University, Higashi-...
متن کاملNeutron Electric Dipole Moment Experiments
The possibility of a non-zero value for neutron EDM continues to be of central importance in physics and cosmology. A non-zero neutron EDM would be a direct evidence for time-reversal symmetry violation. It also implies CP-violation under the assumption of CPT invariance. To date, only two examples of CP-violation have been found: decays of neutral K mesons and B mesons. CP-violation is believe...
متن کاملNeutron Electric Dipole Moment Experiment
A.1.a General Introduction Precision measurements of the properties of the neutron present an opportunity to search for violations of fundamental symmetries and to make critical tests of the validity of the Standard Model (SM) of electroweak (EW) interactions. These experiments have been pursued with great energy and interest since Chadwick [i] discovered the neutron in 1932. Searches for the e...
متن کاملA Lower Bound on the Neutron Electric Dipole Moment in the Weinberg Ansatz for Cp Violation*
We deduce a lower limit on the neutron electric dipole moment in the. Weinberg ansatz for CP violation. The resulting number is comparable to the existing experimental upper limit; this ansatz will therefore be critically tested by the next round of experiments using ultra-cold neutrons.
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ژورنال
عنوان ژورنال: EPL (Europhysics Letters)
سال: 2010
ISSN: 0295-5075,1286-4854
DOI: 10.1209/0295-5075/92/51001